Method and device for measuring slope of driving road

A device for measuring the slope of a road on which a vehicle travels, said device comprising:

• a car speed sensing member for outputting a corresponding electrical signal after sensing a car speed of the vehicle;
• an engine revolution sensing member for outputting a corresponding electrical signal after sensing a number of an engine revolution;
• a loading degree sensing member for outputting a corresponding electrical signal after sensing a loading degree which is changed by a driving state of the vehicle;
• a brake pedal operating state sensing member for sensing, an operating state of a brake pedal, which is changed by an operating state of a brake pedal;
• and
• an engine controlling member connected to said car speed sensing member, said engine revolution sensing member, said loading degree sensing member, and said brake pedal operating state sensing member, whereby the engine controlling member measures the slope of the road by using a calculated engine torque after the engine controlling member judges the position of the transmission gear member by said engine revolution sensing member and said loading degree sensing member, and if the transmission gear member does not change, the engine controlling member calculated an error set value of the engine revolution and loading degree by comparing sensed engine revolution and loading revolution and loading degree data with a predetermined set value of engine revolution and loading degree, and the engine controlling member calculates an engine torque if said calculated error set value of the engine revolution and loading degree is less than said predetermined value, wherein said calculated engine torque is used to measure the slope of the road surface on which the vehicle travels.

A method for measuring a value of the slope of a road on which a vehicle travels, said method comprises the steps of:

• judging a change of a transmission gear member;
• judging an engine revolution and a loading degree by using a signal which transmitted to an engine rotating number and a loading degree sensing members, respectively;
• judging an operation state of said transmission gear member;
• judging an error set value of said engine revolution and said loading degree by comparing sensed engine revolution and loading degree data with a predetermined set value of engine revolution and loading degree if the position of said change and if said brake pedal is not operated gear member does not change;
• and
• judging an engine torque according to the engine revolution and loading degree if said error set value of the engine revolution and the loading degree is less than said predetermined set value, wherein said calculated engine torque is used to measured the slope of the rod surface on which the vehicle travels.